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Interview Q & A >> Networking >> What is DNS and how it works?

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What is DNS and how it works? (Views: 1454)


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The Domain Name System (DNS) is a hierarchical naming system for computers, services, or any resource participating in the Internet. It associates various information with domain names assigned to each of the participants. Most importantly, it translatesdomain names meaningful to humans into the numerical (binary)identifiers associated with networking equipment for the purpose oflocating and addressing these devices world-wide. An often used analogyto explain the Domain Name System is that it serves as the "phone book" for the Internet by translating human-friendly computer hostnames  into IP addresses. For example, www.example.com translates to 208.77.188.166.

Submitted By: Anonymous | Created On: 7/19/2009 3:22:20 PM

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our query if didnt know the IP of the site then it query to DNS server it proved and vice-versa  it is intellegent system learn with the database


Submitted By: Anonymous | Created On: 7/24/2009 11:53:17 PM

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DNS means Domain name Server or Domain name system.DNS helps to convert the ip address into domain name.Domain name into ip address.You cannot remember many website ip address at same time.So domain name is used for remembering the website.
For example 74.125.239.17 is one ip address of Google.com.It is very difficult to remember always.So you can use domain name to view the particular website.The primary work of DNS is if you give ip address in browser ,it search for domain name of particular ip address.If you give domain name in the address bar of the browser it convert the domain name to ip. If you have any queries regarding DNS visit the site http://www.whoisxy.com/

Submitted By: rethu | Created On: 5/11/2013 11:11:58 PM

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The domain name system or domain name server (DNS) is a system that stores information associated with domain names in a distributed database on networks, such as the Internet. The domain name system (domain name server) associates many types of information with domain names, but most importantly, it translates the domain name (computer hostnames) to IP addresses. It is used to store DNS records such as MX(Mail exchange) records, C (Canonical)records and A(Aliases) records.

DNS is useful for several reasons. Most well known, the DNS makes it possible to attach easy-to-remember domain names and hard-to-remember IP addresses. For example 74.125.239.17 is one ip address of Google.com. It is very difficult to remember always so you can use domain name to view the particular website.The primary work of DNS is, if you give ip address in the browser ,it search for the domain name of a particular ip address. If you give domain name in the address bar of the browser it convert the domain name to ip address(Search for the particular ip address). For any queries regarding DNS visit the site [url=http://www.whoisxy.com/dns-query.aspx]WhoisXY.com[/url] .

Submitted By: kernel | Created On: 6/24/2013 5:18:58 AM


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